diff --git a/hgext/largefiles/basestore.py b/hgext/largefiles/basestore.py
--- a/hgext/largefiles/basestore.py
+++ b/hgext/largefiles/basestore.py
@@ -26,10 +26,11 @@ class StoreError(Exception):
 
     def longmessage(self):
         return (_("error getting id %s from url %s for file %s: %s\n") %
-                 (self.hash, self.url, self.filename, self.detail))
+                 (self.hash, util.hidepassword(self.url), self.filename,
+                  self.detail))
 
     def __str__(self):
-        return "%s: %s" % (self.url, self.detail)
+        return "%s: %s" % (util.hidepassword(self.url), self.detail)
 
 class basestore(object):
     def __init__(self, ui, repo, url):
@@ -69,7 +70,7 @@ class basestore(object):
 
             if not available.get(hash):
                 ui.warn(_('%s: largefile %s not available from %s\n')
-                        % (filename, hash, self.url))
+                        % (filename, hash, util.hidepassword(self.url)))
                 missing.append(filename)
                 continue
 
@@ -214,4 +215,5 @@ def _openstore(repo, remote=None, put=Fa
         except lfutil.storeprotonotcapable:
             pass
 
-    raise util.Abort(_('%s does not appear to be a largefile store') % path)
+    raise util.Abort(_('%s does not appear to be a largefile store') %
+                     util.hidepassword(path))
diff --git a/hgext/largefiles/remotestore.py b/hgext/largefiles/remotestore.py
--- a/hgext/largefiles/remotestore.py
+++ b/hgext/largefiles/remotestore.py
@@ -24,9 +24,10 @@ class remotestore(basestore.basestore):
         if self.sendfile(source, hash):
             raise util.Abort(
                 _('remotestore: could not put %s to remote store %s')
-                % (source, self.url))
+                % (source, util.hidepassword(self.url)))
         self.ui.debug(
-            _('remotestore: put %s to remote store %s\n') % (source, self.url))
+            _('remotestore: put %s to remote store %s\n')
+            % (source, util.hidepassword(self.url)))
 
     def exists(self, hashes):
         return dict((h, s == 0) for (h, s) in self._stat(hashes).iteritems())
@@ -57,7 +58,8 @@ class remotestore(basestore.basestore):
             # This usually indicates a connection problem, so don't
             # keep trying with the other files... they will probably
             # all fail too.
-            raise util.Abort('%s: %s' % (self.url, e.reason))
+            raise util.Abort('%s: %s' %
+                             (util.hidepassword(self.url), e.reason))
         except IOError, e:
             raise basestore.StoreError(filename, hash, self.url, str(e))
 
diff --git a/tests/test-largefiles-cache.t b/tests/test-largefiles-cache.t
--- a/tests/test-largefiles-cache.t
+++ b/tests/test-largefiles-cache.t
@@ -47,7 +47,7 @@ but there is no cache file for it.  So, 
 
   $ hg update -r0
   getting changed largefiles
-  large: largefile 7f7097b041ccf68cc5561e9600da4655d21c6d18 not available from file:$TESTTMP/mirror (glob)
+  large: largefile 7f7097b041ccf68cc5561e9600da4655d21c6d18 not available from file://$TESTTMP/mirror (glob)
   0 largefiles updated, 0 removed
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg status
@@ -64,7 +64,7 @@ Update working directory to tip, again.
 
   $ hg update -r0
   getting changed largefiles
-  large: largefile 7f7097b041ccf68cc5561e9600da4655d21c6d18 not available from file:$TESTTMP/mirror (glob)
+  large: largefile 7f7097b041ccf68cc5561e9600da4655d21c6d18 not available from file://$TESTTMP/mirror (glob)
   0 largefiles updated, 0 removed
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg status
diff --git a/tests/test-largefiles.t b/tests/test-largefiles.t
--- a/tests/test-largefiles.t
+++ b/tests/test-largefiles.t
@@ -1280,7 +1280,7 @@ Update to revision with missing largefil
   $ rm ${USERCACHE}/7838695e10da2bb75ac1156565f40a2595fa2fa0
   $ hg up -r 6
   getting changed largefiles
-  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file:$TESTTMP/d (glob)
+  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file://$TESTTMP/d (glob)
   1 largefiles updated, 2 removed
   4 files updated, 0 files merged, 2 files removed, 0 files unresolved
   $ rm normal3
@@ -1301,7 +1301,7 @@ Update to revision with missing largefil
   ! normal3
   $ hg up -Cr.
   getting changed largefiles
-  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file:$TESTTMP/d (glob)
+  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file://$TESTTMP/d (glob)
   0 largefiles updated, 0 removed
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   $ hg st
@@ -1323,7 +1323,7 @@ Merge with revision with missing largefi
   4 files updated, 0 files merged, 0 files removed, 0 files unresolved
   (branch merge, don't forget to commit)
   getting changed largefiles
-  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file:$TESTTMP/d (glob)
+  large3: largefile 7838695e10da2bb75ac1156565f40a2595fa2fa0 not available from file://$TESTTMP/d (glob)
   1 largefiles updated, 0 removed
 
   $ hg rollback -q
diff --git a/tests/test-lfconvert.t b/tests/test-lfconvert.t
--- a/tests/test-lfconvert.t
+++ b/tests/test-lfconvert.t
@@ -343,7 +343,7 @@ Ensure the abort message is useful if a 
   $ rm largefiles-repo/.hg/largefiles/*
   $ hg lfconvert --to-normal issue3519 normalized3519
   initializing destination normalized3519
-  large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file:$TESTTMP/largefiles-repo (glob)
+  large: largefile 2e000fa7e85759c7f4c254d4d9c33ef481e459a7 not available from file://$TESTTMP/largefiles-repo (glob)
   abort: missing largefile 'large' from revision d4892ec57ce212905215fad1d9018f56b99202ad
   [255]